1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f4abce0a4ca7a6281a8496534481cbc8ca5518dddef07837308130277e9675. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d36f9b41-01ae-47bd-88d8-a63660e9a5c1.json and https://artists.proofprofile.net/proofs/artist/d36f9b41-01ae-47bd-88d8-a63660e9a5c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9211fb8e8d9390bd4f74b8ef3d598644e5002a529775c44908bfdd631d0e1c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2304144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd86da1817b50833bd2d8b149fba8350d615c46a46cafa150d2323d042021db8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2304153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0549a2f6ae29c6b8efc4e75e15b2220be60d7341b4a0870c1de256734611bdc5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2304155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb0076fd5ae73d526ab61280d739b13a698ca6ce775f81a078d240ad214ad84. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2304156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7c46f87adc8d8bb5d319f1d861dfa067e47815762d7fca7c492f3989918b46. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384318b97529507e3b117ed44f9305c1f909e2d20545066ce739378b1616e909. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b6fa1562ba305c9555ea540e80a78a9fd9cb4c26c6d61e4d7f784789913082. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd576740d9b0403c7e9fee6d303a45823222488fde0c1a4e048cb34d9512419. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b40662170dd6204a819564af8321bd26352308f8ed25c464a1b3ab661b0fa1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43bba7a492f0ab9a26d0b19232b56d9c2565638bf02e09a57cc0d54adbb8f93. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551525c3be127f2e5a3af2f34aeafce746c79c700c9b69546e19a86e295b40e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e8dbc6f42cad81f3f73265dc9e9051101be491da52167bbdd2a4e53420a6de. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300740.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd937a7b7a49a2cecf5672a56ebd939f51266707d581effa1e9eb6aee58c382. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:24:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKXN22388553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d4d1a0b7bc3a0133e4341fa56ad27a8141de2d6ac0fe681f4e60e3298ac58. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:13:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKXN22393632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6de7c54394ad3db2f9f36b9648a677ab48948b0a8ada267c117a57b63c481e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22330882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53906e3a556c714554e4f7c09727698fa90b28aea4f55686b1c06e35a90d5580. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22335323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03848e8c34eb0377cdd78eb1d449b8ef0c157cdc8e539d2386dabc0965aab604. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:20:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92462807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113836edc9fd5948cf838f83174be6cd2f638eabff4e39e3225f482309fd227. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXF9Q2533870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232ebb95550907c4527715d968548c650a728fc2a1ef0be683715765750edd8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92513002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94f00d84d73c64fd3e22674d3db791933a0534edcc13d2dc1456c88b1d39968. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2594362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b1a38c96c1b22ccdd33fbd5859b239cb3a522956d8119a8a1ae67668a2b576. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2594363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f528646cfac696c597cd82882bee4622874ab30aabdc8daa9a9a712e873ac0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXH2J2579906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921dc66519d5c118b6c1d6ba55e1b2f7aacd943df00792d253eae91df748ac43. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHND2536654.